What can I do to help protect my new boots leather?

Clean the dirt, mud or contaminates off after each shift with soft brush or damp cloth. Leave your boots out to dry after cleaning them in a warm place. Avoid any harsh or direct heat on them, as it will damage and may ruin the leather. You need to let them breathe. Avoid storing them in a plastic bag and instead leave them out in the open somewhere safe, like on a shelf.